Flora of Clark Valley Area

Flora of Clark Valley Area

Introduction
Checklist

Flora of Clark Valley Area

This checklist is a start at a true flora of the Clark Valley Area. It consists primarily of voucher records from many different people, augmented by three days of fieldwork in three areas of Clark Valley. Most of the fieldwork was done in December, the worst possible time to do such surveys.
The floristic area denoted as the Clark Valley Area is delineated by the region outlined in red in the following map:

Only a single road traverses this area, the Rockhouse Canyon Road, on the western side of the Valley (see map below). There is also a private road that accesses private land on the north side of Clark Lake.
The western boundary of this area is the ridgeline / drainage divide of Coyote Mountain and its extension northward, to include the entire drainage basin of Butler Canyon / Rockhouse Canyon up to the San Diego County border with Riverside County.
The eastern boundary is mostly at the 3000 foot elevation contour of the Santa Rosa Mountains. The southeastern boundary is placed just a bit to the west of the Villager Peak Trail and Rattlesnake Canyon, since those two areas are more naturally included in the neighboring floristic area.
The southern boundary is set along Highway S22 to divide Clark Valley from the Badlands. Although this boundary is somewhat arbitrary, S22 gives a well-defined boundary.
For more information about Clark Valley, including pictures from our surveys, see Borrego Desert: Clark Valley.
Voucher Records

The vouchers come from a search on 8 December 2008 of the Consortium of California Herbaria. The Consortium records were searched for San Diego County specimens that contained the word Clark in the locality (297 vouchers), as well as records with coordinates that fell within a rectangle that encompassed this area (369 vouchers). Duplicate vouchers, vouchers outside this area, and vouchers determined only to the genus that had more than one possible species, were removed.
This process yielded a total of 226 vouchers of 133 unique taxa.
The dominant collectors in the Consortium records were Larry Hendrickson and Kim Marsden and vice-versa, 83 vouchers; R. Mitchel Beauchamp, R. C. Pierce, 71 vouchers; and Bill Sullivan, 31 vouchers. These three sets of collectors accounted for 185 of the 226 vouchers, 82% of the total.
The locations of the vouchers are plotted in the following map, which also shows the boundaries of this region in more detail:

Because many vouchers share the same location, there are far fewer than 226 points plotted above.
Field Work

Three different areas within the Clark Valley area have been field surveyed. On 27 December 2007, James Dillane, Wayne Armstrong and I surveyed the 2.7 miles of the Alcoholic Pass Trail on Coyote Mountain that are on the Clark Valley side. We surveyed only for species not previously found on the southwestern side of the trail, so this survey was very incomplete. That portion of the trail is shown in green on the following map:

On 9 and 12 December 2008, Mike Crouse and I surveyed the two different routes shown in the following map :

We surveyed 5.75 unique miles on 9 December 2008, and 5.7 unique miles on 12 December 2008.
We also scanned the slopes of the nearby portion of the Santa Rosa Mountains for the elephant trees, Bursera microphylla, reported from that location (indicated by the labeled line in the above map), without finding them. However, since those trees were likely to be leafless at that time, they easily could have escaped our binocular survey from afar. This species was added to the checklist below based on sightings by Mark Jorgensen and Larry Hendrickson.
A total of 63 taxa that could be fairly-confidently identified were found in those three December searches; 19 of those 63 taxa, 30%, are not among the vouchered species. A small number of additional taxa were found that could not be confidently identified at those times.
The unvouchered species do not come from any general problem with my identifications, since those unvouchered species include such easy-to-recognize taxa as Opuntia ramosissima, Psorothamnus spinosus, Ferocactus cylindraceus, and Encelia farinosa. This simply reflects the lack of botanical work for this area. It is possible that one or two of the unvouchered species might be misdetermined, since some of those determinations were made from dead plants.
Total Checklist

The total number of taxa presented below is 153, 148 of which are native. Of the 153 taxa, 63 were observed on one of the three field surveys, leaving 90 to be found from surveys at a more optimal time of year, or in locations not yet surveyed. Since 30% of the observed taxa are so far unvouchered, this may imply that the voucher list is on the order of 30% incomplete. However, since many of the unvouchered taxa are common, it may only imply that the most common taxa have not yet been vouchered.
Another source of incompleteness for this checklist is that most of the area has never been surveyed, especially the steep lower slopes of the Santa Rosa Mountains which may defy further surveys indefinitely. I estimate at most 24 square miles (62 km²) has had any survey within it, whereas 34 square miles (88 km²) has never had any survey within it. Using the standard relationship that the number of species scales as the 0.3 power of the area, this implies that (58/24)^0.3 = 1.30 times more species should be found in the total area of ~58 square miles. This incompleteness is an additional factor to the incompleteness of the surveyed areas.
Thus the checklist below may be on the order of 1 / 1.3² ~ 60% complete, implying that the true number of taxa in this area might be roughly 260 instead of the 153 present below.
Checklist for the Clark Valley Area

The Checklist is sorted first by category - ferns, dicots, and monocots - and then by family and scientific name. The Family and Scientific Name are from the Jepson Manual, with the Family being given by the first three letters. See Plant Family Abbreviations to decode the abbreviations. An asterisk before the Common Name indicates a non-native taxon.
Rough estimates of the number of plants and number of locations are given for each species observed in each of the three survey areas. The first number is the number of plants, maxing out at 99; the second number is the number of separate locations, maxing out at 9. The column headers for the three survey areas are as follows: Valley for 9 December 2008; Lake for 12 December 2008; and Alco. for Alcoholic Pass.
A few species were observed only off-trail near the Alcoholic Pass Trail, such as Ephedra aspera, and hence do not have abundance estimates. They can be identified by entries without any abundance estimates from any survey and without any vouchers.
The last column is the number of vouchers for each taxon from the Consortium.
The checklist contains an entry for Chaenactis carphoclinia as well as for its variety carphoclinia since other varieties have been found in nearby areas, and that voucher may have been determined only to the species.
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# FAM Scientific Name (*)Common Name Valley
# Plants Lake
# Plants Alco.
# Plants # V
1 PTE Cheilanthes parryi woolly lipfern 10/3
2 EPH Ephedra aspera Mormon tea
3 ACA Justicia californica chuparosa 1
4 AMA Amaranthus fimbriatus fringed amaranth 1
5 ASC Asclepias subulata rush milkweed 1/1
6 ASC Sarcostemma hirtellum rambling milkweed 1
7 AST Ambrosia dumosa burroweed 99/9 99/9
8 AST Baileya pauciradiata Colorado Desert marigold 2
9 AST Bebbia juncea var. aspera sweetbush 1/1 2/1 2
10 AST Calycoseris parryi yellow tackstem 1
11 AST Calycoseris wrightii white tackstem 1
12 AST Chaenactis carphoclinia pebble pincushion 1
13 AST Chaenactis carphoclinia var. carphoclinia pebble pincushion 1
14 AST Chaenactis fremontii Fremont pincushion 3
15 AST Dicoria canescens desert dicoria 20/2
16 AST Encelia farinosa brittlebush 5/1 20/5
17 AST Encelia frutescens button encelia 1/1 1/1 2
18 AST Geraea canescens hairy desert-sunflower 3
19 AST Helianthus niveus ssp. canescens gray desert sunflower 3
20 AST Helianthus niveus ssp. tephrodes Algodones Dunes sunflower 1
21 AST Hymenoclea salsola var. salsola cheesebush 3/1 2/1 1
22 AST Isocoma acradenia var. acradenia alkali goldenbush 30/5
23 AST Lepidospartum squamatum scale-broom 1
24 AST Malacothrix glabrata desert dandelion 2
25 AST Monoptilon bellioides desert star 2
26 AST Palafoxia arida var. arida desert needle 4
27 AST Pectis papposa var. papposa chinch-weed 1
28 AST Perityle emoryi Emory's rock-daisy 2
29 AST Pleurocoronis pluriseta arrow-leaf 2
30 AST Pluchea sericea arrow-weed 3/1
31 AST Stephanomeria exigua ssp. exigua slender wreathplant 1
32 AST Stephanomeria pauciflora var. pauciflora wire-lettuce 1/1 2/1
33 AST Trichoptilium incisum yellow-head 1
34 AST Trixis californica var. californica California trixis 1/1 1
35 BOR Amsinckia menziesii var. intermedia common fiddleneck 1
36 BOR Amsinckia tessellata var. tessellata bristly fiddleneck 1
37 BOR Cryptantha angustifolia narrow-leaved cryptantha 4
38 BOR Cryptantha barbigera bearded cryptantha 1
39 BOR Cryptantha costata ribbed cryptantha 2
40 BOR Cryptantha micrantha purple-root cryptantha 3
41 BOR Heliotropium curassavicum seaside heliotrope 1
42 BOR Pectocarya heterocarpa chuckwalla pectocarya 2
43 BOR Pectocarya recurvata curvenut combseed 1
44 BOR Tiquilia palmeri Palmer's coldenia 1/1 1
45 BRA Brassica tournefortii *Asian mustard 99/9 99/9 1
46 BRA Caulanthus hallii Hall's caulanthus 2
47 BRA Descurainia pinnata ssp. glabra smooth western tansy-mustard 1
48 BRA Dithyrea californica spectacle-pod 2
49 BRA Guillenia lasiophylla California mustard 1
50 BRA Lepidium lasiocarpum var. lasiocarpum hairy-podded pepper-grass 20/3 2
51 BRA Sisymbrium irio *London rocket 3
52 BRA Streptanthella longirostris longbeak streptanthella 1
53 BUR Bursera microphylla elephant tree 0
54 CAC Echinocereus engelmannii Engelmann's hedgehog cactus 1/1 1
55 CAC Ferocactus cylindraceus California barrel cactus 5/2 2/2 1/1
56 CAC Mammillaria dioica California fish-hook cactus 1
57 CAC Opuntia basilaris var. basilaris beavertail cactus 1/1 2
58 CAC Opuntia echinocarpa silver cholla 20/9 2/2 2
59 CAC Opuntia ganderi Gander's cholla 15/9 2
60 CAC Opuntia ramosissima pencil cholla 20/9 3/1
61 CAP Isomeris arborea bladderpod 1
62 CAR Achyronychia cooperi frost mat 1
63 CHE Allenrolfea occidentalis iodine-bush 30/9 2
64 CHE Atriplex canescens ssp. canescens four-wing saltbush 99/9 1
65 CHE Atriplex hymenelytra desert holly 1/1 1
66 CHE Atriplex polycarpa cattle saltbush 5/1 20/3
67 CHE Suaeda moquinii bush seepweed 30/9
68 CRO Crossosoma bigelovii rock crossosoma 1
69 CUC Cucurbita palmata coyote melon 1
70 CUS Cuscuta californica var. papillosa papillate dodder 3/1 1
71 EUP Chamaesyce arizonica Arizona spurge 1
72 EUP Chamaesyce micromera Sonoran spurge 2
73 EUP Chamaesyce polycarpa small-seeded spurge 1/1 1/1 1
74 EUP Chamaesyce setiloba Yuma spurge 2
75 EUP Croton californicus California croton 3/1 2
76 EUP Ditaxis lanceolata narrowleaf ditaxis 1
77 EUP Stillingia linearifolia linear-leaved stillingia 1
78 EUP Stillingia spinulosa annual stillingia 20/9 3
79 FAB Acacia greggii catclaw 20/9 10/9 1
80 FAB Astragalus crotalariae Salton milk-vetch 30/5 1
81 FAB Astragalus didymocarpus var. didymocarpus white dwarf locoweed 1
82 FAB Astragalus didymocarpus var. dispermus dwarf white milk-vetch 1
83 FAB Astragalus lentiginosus var. borreganus Borrego milk-vetch 4
84 FAB Dalea mollis silky dalea 1
85 FAB Dalea mollissima downy dalea 1
86 FAB Lotus strigosus strigose lotus 1
87 FAB Lupinus arizonicus Arizona lupine 20/2 2/2 3
88 FAB Prosopis glandulosa var. torreyana honey mesquite 99/9 30/9
89 FAB Psorothamnus emoryi Emory's indigo-bush 15/2 4
90 FAB Psorothamnus schottii indigo bush 30/9 20/3 2
91 FAB Psorothamnus spinosus smoke tree 1/1 5/2
92 FOU Fouquieria splendens ssp. splendens ocotillo 5/2 3/1 1
93 GER Erodium cicutarium *redstem filaree 1
94 GER Erodium texanum Texas filaree 1
95 HYD Emmenanthe penduliflora var. penduliflora whispering bells 1
96 HYD Nama demissum var. demissum purple mat 1
97 HYD Phacelia crenulata var. ambigua heliotrope phacelia 5/1 10/2 1
98 HYD Phacelia crenulata var. minutiflora little-flowered heliotrope phacelia 4
99 HYD Phacelia distans common phacelia 10/1 30/5 4
100 KRA Krameria grayi white rhatany 20/9 20/5 1
101 LAM Hyptis emoryi desert-lavender 10/2 2
102 LAM Salvia columbariae chia 5/2 1
103 LAM Salvia vaseyi Vasey's sage 10/3
104 LOA Mentzelia desertorum desert blazing star 2
105 LOA Mentzelia affinis yellow blazing star 1
106 LOA Mentzelia involucrata bracted blazing star 2/2 1/1 1
107 LOA Petalonyx thurberi ssp. thurberi Thurber's sandpaper-plant 3/3 10/2 1
108 MAL Eremalche exilis white mallow 1
109 MAL Eremalche rotundifolia desert five-spot 2
110 MAL Sphaeralcea ambigua var. ambigua apricot mallow 1
111 MAL Sphaeralcea ambigua var. rosacea rosy apricot mallow 1
112 MAL Sphaeralcea angustifolia copper globemallow 1
113 NYC Abronia villosa var. villosa hairy sand-verbena 4
114 NYC Allionia incarnata trailing four o'clock 1
115 NYC Mirabilis bigelovii var. retrorsa wishbone plant 3
116 ONA Camissonia boothii ssp. condensata Booth's desert primrose 2/2 2
117 ONA Camissonia californica California suncup 99/9 50/7 1
118 ONA Camissonia cardiophylla ssp. cardiophylla heartleaf sun-cup 1
119 ONA Camissonia claviformis ssp. peirsonii brown-eyed primrose 99/9 50/9 3
120 ONA Camissonia pallida ssp. pallida pale sun-cup 1
121 ONA Oenothera deltoides ssp. deltoides dune primrose 99/9 50/9 1
122 PAP Eschscholzia minutiflora ssp. minutiflora small-flowered poppy 3
123 PAP Eschscholzia parishii Parish's poppy 2
124 PLA Plantago ovata desert plantain 99/9 2
125 POL Eriastrum eremicum ssp. eremicum desert woolly-star 5/2
126 POL Gilia latifolia broad-leaf gilia 1
127 POL Gilia stellata star gilia 2
128 POL Loeseliastrum schottii Schott's calico 99/9 40/9 1
129 POL Chorizanthe brevicornu var. brevicornu brittle spineflower 1/1 2/1 2
130 POL Eriogonum fasciculatum var. polifolium California buckwheat 1
131 POL Eriogonum thomasii Thomas' buckwheat 4
132 POL Eriogonum trichopes little desert trumpet 10/2
133 POR Calyptridium monandrum sand cress 1
134 RES Oligomeris linifolia narrowleaf oligomeris 3
135 RUB Galium stellatum var. eremicum star-flowered bedstraw 1
136 SCR Mimulus bigelovii var. bigelovii Bigelow's monkeyflower 3
137 SCR Mohavea confertiflora ghost flower 2
138 SIM Simmondsia chinensis jojoba 20/9 5
139 SOL Datura wrightii sacred datura 1
140 SOL Lycium brevipes var. brevipes desert-thorn 2
141 SOL Nicotiana clevelandii Cleveland's tobacco 1
142 SOL Nicotiana obtusifolia desert tobacco 1
143 SOL Physalis crassifolia thick-leaved ground cherry 1
144 VIS Phoradendron californicum desert mistletoe 10/9 1/1
145 ZYG Fagonia laevis California fagonia 1
146 ZYG Kallstroemia californica California caltrop 2
147 ZYG Larrea tridentata creosote bush 99/9 30/9 3
148 LIL Hesperocallis undulata desert lily 4/4 1/1 3
149 POA Aristida adscensionis six-weeks three-awn 5
150 POA Aristida californica var. californica California three-awn 1
151 POA Pleuraphis rigida big galleta 30/9 20/2 2
152 POA Schismus arabicus *Mediterranean grass 1
153 POA Schismus barbatus *Mediterranean schismus 50/9 2

Voucher data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/)

#	FAM	Scientific Name	(*)Common Name	Valley # Plants	Lake # Plants	Alco. # Plants	# V
1	PTE	Cheilanthes parryi	woolly lipfern			10/3
2	EPH	Ephedra aspera	Mormon tea
3	ACA	Justicia californica	chuparosa				1
4	AMA	Amaranthus fimbriatus	fringed amaranth				1
5	ASC	Asclepias subulata	rush milkweed		1/1
6	ASC	Sarcostemma hirtellum	rambling milkweed				1
7	AST	Ambrosia dumosa	burroweed	99/9	99/9
8	AST	Baileya pauciradiata	Colorado Desert marigold				2
9	AST	Bebbia juncea var. aspera	sweetbush	1/1	2/1		2
10	AST	Calycoseris parryi	yellow tackstem				1
11	AST	Calycoseris wrightii	white tackstem				1
12	AST	Chaenactis carphoclinia	pebble pincushion				1
13	AST	Chaenactis carphoclinia var. carphoclinia	pebble pincushion				1
14	AST	Chaenactis fremontii	Fremont pincushion				3
15	AST	Dicoria canescens	desert dicoria	20/2
16	AST	Encelia farinosa	brittlebush	5/1	20/5
17	AST	Encelia frutescens	button encelia	1/1	1/1		2
18	AST	Geraea canescens	hairy desert-sunflower				3
19	AST	Helianthus niveus ssp. canescens	gray desert sunflower				3
20	AST	Helianthus niveus ssp. tephrodes	Algodones Dunes sunflower				1
21	AST	Hymenoclea salsola var. salsola	cheesebush	3/1	2/1		1
22	AST	Isocoma acradenia var. acradenia	alkali goldenbush		30/5
23	AST	Lepidospartum squamatum	scale-broom				1
24	AST	Malacothrix glabrata	desert dandelion				2
25	AST	Monoptilon bellioides	desert star				2
26	AST	Palafoxia arida var. arida	desert needle				4
27	AST	Pectis papposa var. papposa	chinch-weed				1
28	AST	Perityle emoryi	Emory's rock-daisy				2
29	AST	Pleurocoronis pluriseta	arrow-leaf				2
30	AST	Pluchea sericea	arrow-weed			3/1
31	AST	Stephanomeria exigua ssp. exigua	slender wreathplant				1
32	AST	Stephanomeria pauciflora var. pauciflora	wire-lettuce		1/1	2/1
33	AST	Trichoptilium incisum	yellow-head				1
34	AST	Trixis californica var. californica	California trixis			1/1	1
35	BOR	Amsinckia menziesii var. intermedia	common fiddleneck				1
36	BOR	Amsinckia tessellata var. tessellata	bristly fiddleneck				1
37	BOR	Cryptantha angustifolia	narrow-leaved cryptantha				4
38	BOR	Cryptantha barbigera	bearded cryptantha				1
39	BOR	Cryptantha costata	ribbed cryptantha				2
40	BOR	Cryptantha micrantha	purple-root cryptantha				3
41	BOR	Heliotropium curassavicum	seaside heliotrope				1
42	BOR	Pectocarya heterocarpa	chuckwalla pectocarya				2
43	BOR	Pectocarya recurvata	curvenut combseed				1
44	BOR	Tiquilia palmeri	Palmer's coldenia	1/1			1
45	BRA	Brassica tournefortii	*Asian mustard	99/9	99/9		1
46	BRA	Caulanthus hallii	Hall's caulanthus				2
47	BRA	Descurainia pinnata ssp. glabra	smooth western tansy-mustard				1
48	BRA	Dithyrea californica	spectacle-pod				2
49	BRA	Guillenia lasiophylla	California mustard				1
50	BRA	Lepidium lasiocarpum var. lasiocarpum	hairy-podded pepper-grass		20/3		2
51	BRA	Sisymbrium irio	*London rocket				3
52	BRA	Streptanthella longirostris	longbeak streptanthella				1
53	BUR	Bursera microphylla	elephant tree				0
54	CAC	Echinocereus engelmannii	Engelmann's hedgehog cactus			1/1	1
55	CAC	Ferocactus cylindraceus	California barrel cactus	5/2	2/2	1/1
56	CAC	Mammillaria dioica	California fish-hook cactus				1
57	CAC	Opuntia basilaris var. basilaris	beavertail cactus		1/1		2
58	CAC	Opuntia echinocarpa	silver cholla	20/9	2/2		2
59	CAC	Opuntia ganderi	Gander's cholla	15/9			2
60	CAC	Opuntia ramosissima	pencil cholla	20/9		3/1
61	CAP	Isomeris arborea	bladderpod				1
62	CAR	Achyronychia cooperi	frost mat				1
63	CHE	Allenrolfea occidentalis	iodine-bush		30/9		2
64	CHE	Atriplex canescens ssp. canescens	four-wing saltbush		99/9		1
65	CHE	Atriplex hymenelytra	desert holly		1/1		1
66	CHE	Atriplex polycarpa	cattle saltbush	5/1	20/3
67	CHE	Suaeda moquinii	bush seepweed		30/9
68	CRO	Crossosoma bigelovii	rock crossosoma				1
69	CUC	Cucurbita palmata	coyote melon				1
70	CUS	Cuscuta californica var. papillosa	papillate dodder	3/1			1
71	EUP	Chamaesyce arizonica	Arizona spurge				1
72	EUP	Chamaesyce micromera	Sonoran spurge				2
73	EUP	Chamaesyce polycarpa	small-seeded spurge	1/1	1/1		1
74	EUP	Chamaesyce setiloba	Yuma spurge				2
75	EUP	Croton californicus	California croton	3/1			2
76	EUP	Ditaxis lanceolata	narrowleaf ditaxis				1
77	EUP	Stillingia linearifolia	linear-leaved stillingia				1
78	EUP	Stillingia spinulosa	annual stillingia	20/9			3
79	FAB	Acacia greggii	catclaw	20/9		10/9	1
80	FAB	Astragalus crotalariae	Salton milk-vetch		30/5		1
81	FAB	Astragalus didymocarpus var. didymocarpus	white dwarf locoweed				1
82	FAB	Astragalus didymocarpus var. dispermus	dwarf white milk-vetch				1
83	FAB	Astragalus lentiginosus var. borreganus	Borrego milk-vetch				4
84	FAB	Dalea mollis	silky dalea				1
85	FAB	Dalea mollissima	downy dalea				1
86	FAB	Lotus strigosus	strigose lotus				1
87	FAB	Lupinus arizonicus	Arizona lupine	20/2	2/2		3
88	FAB	Prosopis glandulosa var. torreyana	honey mesquite	99/9	30/9
89	FAB	Psorothamnus emoryi	Emory's indigo-bush		15/2		4
90	FAB	Psorothamnus schottii	indigo bush	30/9	20/3		2
91	FAB	Psorothamnus spinosus	smoke tree	1/1		5/2
92	FOU	Fouquieria splendens ssp. splendens	ocotillo	5/2	3/1		1
93	GER	Erodium cicutarium	*redstem filaree				1
94	GER	Erodium texanum	Texas filaree				1
95	HYD	Emmenanthe penduliflora var. penduliflora	whispering bells				1
96	HYD	Nama demissum var. demissum	purple mat				1
97	HYD	Phacelia crenulata var. ambigua	heliotrope phacelia	5/1	10/2		1
98	HYD	Phacelia crenulata var. minutiflora	little-flowered heliotrope phacelia				4
99	HYD	Phacelia distans	common phacelia	10/1		30/5	4
100	KRA	Krameria grayi	white rhatany	20/9	20/5		1
101	LAM	Hyptis emoryi	desert-lavender		10/2		2
102	LAM	Salvia columbariae	chia	5/2			1
103	LAM	Salvia vaseyi	Vasey's sage			10/3
104	LOA	Mentzelia desertorum	desert blazing star				2
105	LOA	Mentzelia affinis	yellow blazing star				1
106	LOA	Mentzelia involucrata	bracted blazing star	2/2	1/1		1
107	LOA	Petalonyx thurberi ssp. thurberi	Thurber's sandpaper-plant	3/3	10/2		1
108	MAL	Eremalche exilis	white mallow				1
109	MAL	Eremalche rotundifolia	desert five-spot				2
110	MAL	Sphaeralcea ambigua var. ambigua	apricot mallow				1
111	MAL	Sphaeralcea ambigua var. rosacea	rosy apricot mallow				1
112	MAL	Sphaeralcea angustifolia	copper globemallow				1
113	NYC	Abronia villosa var. villosa	hairy sand-verbena				4
114	NYC	Allionia incarnata	trailing four o'clock				1
115	NYC	Mirabilis bigelovii var. retrorsa	wishbone plant				3
116	ONA	Camissonia boothii ssp. condensata	Booth's desert primrose		2/2		2
117	ONA	Camissonia californica	California suncup	99/9	50/7		1
118	ONA	Camissonia cardiophylla ssp. cardiophylla	heartleaf sun-cup				1
119	ONA	Camissonia claviformis ssp. peirsonii	brown-eyed primrose	99/9	50/9		3
120	ONA	Camissonia pallida ssp. pallida	pale sun-cup				1
121	ONA	Oenothera deltoides ssp. deltoides	dune primrose	99/9	50/9		1
122	PAP	Eschscholzia minutiflora ssp. minutiflora	small-flowered poppy				3
123	PAP	Eschscholzia parishii	Parish's poppy				2
124	PLA	Plantago ovata	desert plantain		99/9		2
125	POL	Eriastrum eremicum ssp. eremicum	desert woolly-star	5/2
126	POL	Gilia latifolia	broad-leaf gilia				1
127	POL	Gilia stellata	star gilia				2
128	POL	Loeseliastrum schottii	Schott's calico	99/9	40/9		1
129	POL	Chorizanthe brevicornu var. brevicornu	brittle spineflower	1/1	2/1		2
130	POL	Eriogonum fasciculatum var. polifolium	California buckwheat				1
131	POL	Eriogonum thomasii	Thomas' buckwheat				4
132	POL	Eriogonum trichopes	little desert trumpet		10/2
133	POR	Calyptridium monandrum	sand cress				1
134	RES	Oligomeris linifolia	narrowleaf oligomeris				3
135	RUB	Galium stellatum var. eremicum	star-flowered bedstraw				1
136	SCR	Mimulus bigelovii var. bigelovii	Bigelow's monkeyflower				3
137	SCR	Mohavea confertiflora	ghost flower				2
138	SIM	Simmondsia chinensis	jojoba			20/9	5
139	SOL	Datura wrightii	sacred datura				1
140	SOL	Lycium brevipes var. brevipes	desert-thorn				2
141	SOL	Nicotiana clevelandii	Cleveland's tobacco				1
142	SOL	Nicotiana obtusifolia	desert tobacco				1
143	SOL	Physalis crassifolia	thick-leaved ground cherry				1
144	VIS	Phoradendron californicum	desert mistletoe	10/9		1/1
145	ZYG	Fagonia laevis	California fagonia				1
146	ZYG	Kallstroemia californica	California caltrop				2
147	ZYG	Larrea tridentata	creosote bush	99/9	30/9		3
148	LIL	Hesperocallis undulata	desert lily	4/4	1/1		3
149	POA	Aristida adscensionis	six-weeks three-awn				5
150	POA	Aristida californica var. californica	California three-awn				1
151	POA	Pleuraphis rigida	big galleta	30/9	20/2		2
152	POA	Schismus arabicus	*Mediterranean grass				1
153	POA	Schismus barbatus	*Mediterranean schismus	50/9			2

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Plants of Southern California: Regional Floras

Copyright © 2008 by Tom Chester
Permission is freely granted to reproduce any or all of this page as long as credit is given to me at this source:
http://tchester.org/sd/plants/floras/clark_valley.html
Comments and feedback: Tom Chester
Last update: 16 December 2008 (link to family abbreviation code added 21 January 2010)